Pull kexec updates from Mike Rapoport:
- Deduplicate crash memory allocation and the exclusion of reserved
crash kernel regions from architecture specific code into a generic
crash_prepare_headers() and enable crashkernel CMA reservation on
arm64 and riscv reservation on arm64 and riscv.
- Skip purgatory checksum verification when the kexec segments cannot
be corrupted by DMA, which saves about 250ms on kexec.
- Replace __ASSEMBLY__ with the compiler provided __ASSEMBLER__ in
include/linux/kexec.h.
- Fix a keyring refcount imbalance in the kdump kernel's dm-crypt key
restore path, which over-dropped the user keyring reference when
more than one key was restored.
* tag 'kexec-v7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/liveupdate/linux:
crash_dump: release keyring reference at the correct time
kexec: Replace __ASSEMBLY__ with __ASSEMBLER__ in header file
kexec_file: skip checksum verification when safe
riscv: kexec_file: Add support for crashkernel CMA reservation
arm64: kexec_file: Add support for crashkernel CMA reservation
powerpc/kexec_file: Use crash_exclude_core_ranges() helper
LoongArch: kexec_file: Use crash_prepare_headers() helper to simplify code
riscv: kexec_file: Use crash_prepare_headers() helper to simplify code
x86/crash: Use crash_prepare_headers() helper to simplify code
arm64: kexec_file: Use crash_prepare_headers() helper to simplify code
crash: Add crash_prepare_headers() to exclude crash kernel memory
powerpc/crash: sort crash memory ranges before preparing elfcorehdr
riscv: kexec_file: Fix crashk_low_res not exclude bug